Bobbin-winder.



A. BUTTER.

BOBBIN WINDER. APPLICATION FILED FEB. 4, I913.

Patented Sept. 25, 1917.

3 SHEETS-SHEET I.

A. ROTTER.

BOBBlN WINDER.

.APPLICATION FILED FEB. 4. 191a.

- 1 $495M l Patented Sept. 25,- 1917.

3 SHEETSSHEET 2.

cam

- mmamo A. ROTTER. BOBBIN WINDER.

APPLICATION FILED FEB. 4. 1913.

Patented Sept. 25, 1917.

3 SHEETS-SHEET 3.

ANTON ROTTER, OF BORSCI-IACI-I, SWITZERLAND.

BOBBIN-WINDER.

Specification of Letters Patent.

Patented Sept. 25, 11911 if Application filed February 4, 1913. Serial No. 746,215.

To all whom it may concern:

Be it known that I, Arron Ror'rER, a citizen of the Republic of Switzerland, residing at Rorschach, Switzerland, have invented new and useful Improvements in Bobbin-Winders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will en-. able others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon which form a part of this specification.

The invention relates to a machine for winding bobbins for shuttles of einbroidere ing machines.

In the hitherto known machines of this type the bobbin spindle and therewith the thread guide are impelled by means of friction clutches or by yielding driving couplings or claw couplings, which manner of impelling involves several disadvantages.

\Vith bobbin winders in which the bobbin spindle is impelled by means of a friction clutch, it happens that the bobbin spindle is not uniformly driven oil, grease or find and the like adheres to the rubbing surfaces of the friction clutch, whereby the ratio of gearing the bobbin spindle and the bread guide is altered and an irregular open winding is produced. Moreover by the sliding of the rubbing surfaces on each other the bobbin spindle is driven slower, the uniform motion of the machine is interrupted and the output of the machine is diminished.

Tn bobbin winders in which the bobbin spindle is impelled by means of yielding, driving couplings or claw couplings, a dis tinct number of revolutions of the bobbin spindle must be maintained with relation to the driving parts of the couplings (claws, teeth and the like). If however this number of revolutions is exceeded in order to increase the output of the machine, sudden heavy shocks are imparted to the driving parts of the couplings when they are thrown in, whereby they are injured and in time become useless, or they are at once broken off and the ma chine is stopped. A reliable driving of the bobbin spindle is therefore impossible at a speed of 2500 to 3000 revolutions per minute in such machines. Moreover with these known machines there are necessary very complicateddevices for throwing the couplings in and out, which need much power and raise the price of the machine.

Bobbin winders for embroidering machines in which the driving of the bobbin spindle and thread guide is accomplished through friction clutches, as well as those in which the starting and stopping of the bobbin spindle is effected b I means of such friction clutches have the further disadi vantage that by reason of the irregular or non-uniform transmission of the power the bobbins do not contain the same length of thread, thereby causing an enormous loss of thread when re-filling the shuttles.

Theseobjections are overcome in the present high speed machine by causing the bobbin spindle and thread guide to be positively driven from a constantly operating shaft provided with a belt driving mechanism including fast and loose pulleys, the belt being automatically shifted from the fast to the loose pulley upon the completion of a bobbin, and also automatically shifted to the fast pulley again after the discharge or stripping of the bobbin from the spindle.

In the accompanying drawings the invention is illustrated by way of example.

Figure 1 is a plan view showing a bobbin winder provided with a plurality of spindles.

Fig. 2 is a side elevation, partly in sec tion, of the same,

Figs. 3 to 9 are detail views showing parts of the machine, Figs. 6 and 7 being drawn at a larger scale.

The illustrated bobbin winder is provided with a plurality of spindles, that is to say it is composed of a plurality of single bobbin winders which are mounted on a common base plate. There are provided four single bobbin winders which are arranged by twos opposite each other in alinement and for these machines there is arranged below the plate 1 a common driving shaft 2 which is disposed rectangular to the bobbin spindles of the single bobbin winders.

In each single bobbin winder the bearing 3 for the bobbin spindle is mounted on the plate 1. The bobbin spindle 4 is carried on the bobbin spindle shaft which is mounted to turn in the bearing 3 but is prevented from moving axially. On the eountershaft 5 from which the bobbin spindle and the thread guide are impelled, there are mounted a toothed wheel 6 which meshes with a toothed wheel 7 on the bobbin spindle shaft,

a fixed pulley 8, and a loose pulley 9, the pulley 8 turning with the shaft 5 and with the toothed wheel 6, while the pulley 9 is mounted to turn loosely between the toothed wheel 6 and the pulley 8. The cam 10 for impelling the thread guide 10 is secured to the shaft 5. The part 11 surrounding the shaft 5 carries two yielding annular brake shoes 12 for the fixed pulley 8 (Figs. 5 and 8).

Always two bobbin winders are arranged opposite each other, the countershafts 5 of .which are separated from each other and coaxially mounted in bearings 13 (Fig. 2), and are provided with a common driving belt ll which passes over the pulleys 8 or 9 of the two bobbin winders and over a pulley 15 secured to the shaft 2 and over a pulley 16 which is loosely mounted on the shaft 2 by the side of said latter pulley (Figs. 1, 3 and i). A common auxiliary shaft 17 is provided for each two bobbin winders arranged side by side that is parallel to the shaft 2. The shafts 17 are mounted in supports 18 on the plate 1 below the shafts 5 and rectangular to them. On the front ends of these shafts (Fig. 1) there are mounted worm wheels 19 which mesh with worms 20. The worms are secured to a common shaft 22 which is mounted to turn in bearings 21 on the plate 1. On the shaft 22 there is also secured a pulley 23 which is connected by a belt 24 with a pulley 25 secured to the shaft 2 (Figs. 1, 3 and 4).

While the bobbin spindles and the thread guides are impelled by the counter-shafts 5, the shafts 17 serve for impelling the auxiliary devices, as those for binding the bobbins, for stopping and imparting motion to the bobbin spindle, for removing the bound bobbin and for cutting the thread between two completed bobbins. The auxiliary shafts 17 rotate continuously, while the mentioned auxiliary devices work intermittingly, that is to say always after a bobbin has been completed. For this purpose these devices are actuated by means of cams, of which those belonging to one bobbin winder are mounted on a common sleeve 26. These sleeves are free to turn on the shafts 17 and are formed as halves of claw-couplings, the corresponding halves 27 being secured to the shafts 17 (Fig. 1). Of the auxiliary devices in the following only those for stopping and throwing in the bobbin spindle and the thread guide will be described.

On the bearing 3 of each bobbin winder there is mounted a lever 28, 29 which is shown in Figs. 1 and 2. The arm 29 of this lever by the action of a spring 30 connected to the arm 28, presses from below against the bobbin spindle. On the sleeve 26 of each bobbin winder there are mounted a cam disk 31 which acts to connect and disconnect the sleeve to the shaft 17, and a cam disk 32 which acts to displace the belt 14: driving the bobbin spindle and the thread guide. The cam disk 31 is plain at one side and is provided at the other side with a projection 33 (Fig. 7). An arm 34 carrying a roller is pressed by a plate spring 35 against the plain side of the disk. and an arm 36 also carrying a roller is pressed by a tension spring 37 against the side of the disk which is provided with the projection 33. 'Both arms are loosely mounted to turn about a fixed axis 38 and a set screw 39 on the arm 36 is pressed by the spring 37 against the arm 34-. In this manner the arms 34: and 36 are by means of the springs connected to each other and to the disk 31. T he'arm 36 carries an edge 40, which in a known manner that will be later described coacts'with an edge 11 on the arm 28 to start the auxiliary devices. which is guided by pins 13 and 1 1 in a support 45 on the plate 1, is pressed by a spring 12 against the surface of the cam disk 32 (Fig. 5). To the carrier 11 there is also secured a belt fork 46 for the belt 14 (Fig. 8). The movement of the carrier 11 and of the belt fork as to and from the support 15 is limited at one side by the carrier and at the other side by an adjustable ringa7 on the pin is moving against the support 4L5.

When a bobbin is being wound the edge 41 on the arm 28 is situated by the side of the edge 'lO on the arm 36 (Fig. 7), whereby the arm 36 is prevented from touching the disk 31, while the arm 34 is pressed by the spring 35 against the disk 31 and thereby holds the sleeve 26 with the cam disks 31 and 32 disconnected from the rotating shaft 17 By this means the sleeve 26 is held in operative position. When the diameter of the bobbin increases the arm 29 is moved downward and the arm 28 is moved upward, and, when the diameter of the bobbin has attained the desired size, the edge 40 is released by the edge 41, so that by the action of the spring 37 the arm 36 is pressed against the dislzBl and the sleeve 26 is coupled to the part 27 and the shaft 17. The

sleeve 26 is now rotated and the cam disk 32 acts on the carrier 11. By the belt fork 16 the latter moves the belt 14, which until this time was on the fixed pulley 8, onto the loose pulley 9 and the brake shoes 12 on the carrier engage within the pulley 8 and brake it, the countershaft 5 and therewith the bobbin spindle 5 and the thread guide are suddenly stopped.

After the sleeve 26 has completed one rotation the belt 14 is moved by means of the fork 46, the spring 42 and the cam disk 32 from the loose pulley 9 onto the fixed pulley 8, the-braking of the latter is interrupt ed and thereby the bobbin spindle and the thread guide are thrown in. Simultaneously the projection 33 on the disk 31 acts A roller on the carrier 11,

(Figs. 1 and 9).

on the arm 36 and removes the roller thereon fromithe disk, and thereafter the spring 35 which tends to maintain the arm 34 in contact with the set screw 39'on the arm 36,

causes the arm 34 todisconnect the sleeve 26 from the .part 27land the shaft 17 whereby the sleeve is stopped. The arm 36 is turned .until the edge 41 on the arm 28 is located by the side of theedge39 .on the arm 36 andvthe sleeve 26 1S maintamed disconnected.

4E8 designates the member for removing the completely wound and bound bobbins from the bobbin spindle. This member is attached to rods which are displaceably mounted onthe bearing 3 and motion is imparted to it from the cam disk 49 011 the sleeve 26. Theauxiliary thread guide 50 is actuated by a rail 51, which is secured to the guide bar 52of the bobbin removing member i8 (Fig. 9). A roller on a lever 53 which latter is pivotally connected. to the .auxiliarythread guide (Fig. 6) leans against the rail 51, whichhastwo cut away portions The lever 53 carries laterally a pin 54; (Fig. 5) which leans against a double armed lever .55. The upper arm of this lever also carries laterally a pin 56, which is adapted to act on the movable front part of the thread guide :10. The auxiliary thread guide 50 serves to make the central or final windings in (the middle of the completedbobbins. It begins to work if during the action ofthe member as the rail 51 turns by its cutaway portions the lever 53 outward Whereat by means of the parts 54-, 55 and 56 the threadguide l0 isthrown out of work, that is to say \itis turned upwardand makes room foritheauxiliary thread guide,

so that in a known manner the auxiliary somewhat beyond the middle of the longitudinal axis of the bobbin and the remaining portion of this W'lnClHlg remains exactly in the middle of thebobbin whereupon the fork 57 moves the first mentioned portion of the winding over the last mentioned portion and thereby secures it. The fork 57 is moved from a cam disk 63 on the sleeve 26 by means of levers 60, 61 and62 (Fig. 1). This cam disk is provided with a lateral recess 26 in whicha fixed roller 64 can enter in order to stop the sleeve 26 after the latter has performedone revolution (Figs. 1 and2). The driving belt 14 may be shifted by means of a hand operated lever 67, (Fig. 2). This lever is connected by, a rod 66 to arod which is connected torthe carrier 11 by means ,of an arm 47 (Fig. 8) which projects laterally from the adjustable ring 47 on the pin 44 of said carrier.

.the hitherto known bobbin winders for bobbins of embroidery machine shuttles, that, if the threadbreaks or any work, for example repair work on the bobbin spindle bearing of one machine has to be done, the bobbin spindle and thread guide of this machine can be stopped, while the opposite machine may continue its operation during the time that this repair work (is being done.

In the described hitherto known bobbin winders in .which the bobbin spindle and thread guide are impelled by means of conplings, the whole machine must be stopped if repair work is to be done on the bobbin spindle bearing, or in the machines which are provided witha plurality of spindles, thatrow of bobbin spindle hearings in which a bearing is defective, must be taken to pieces and the helical wheelor auxiliary shaft must be removed with the coupling thereon and the cotualing must be loosened, because .in these bobbin winders the helical wheel shaft traverses the bobbin spindle bearings. All these difficult and tedious works are avoided by the bobbin winderaccording to thisinventionbecause in this machine the bobbin spindle of each winding mechanism is impelled independently and without the use of a coupling, and the helical wheel or auxiliary shaft which is common to all mechanisms is impelled inclependently from the countershaft and from the shaft impelling the bobbin spindle of each bobbin winder, and in which the auxiliary shaft has its separate belt drive and does not traverse the bobbin spindle bearings 3.

By the fact that thereare avoided in the described and illustrated bobbin winder the use of all couplings and means for actuating them for impelling the bobbin spindle and the threadguides, it is possible to obtain a reliable and regular drive also at the highest speed andoutput of the machine Furthermore,the bobbins are cross wound, thereby insuring the reatestpossible length of thread, and this length is substantially the same for all bobbins, so that loss of thread to the consumer is reduced to a minimum.

I claim:

1.In a high speed bobbin winder, co

axial, rotatable butnot axially movable bobbin spindles, co-axial counter shafts for positively driving said spindles, a fast and a loose pulley on each shaft, a driving shaft, a fast and a loose pulley on the latter, a driving belt passing over the pulleys on the driving shaft and one of the pulleys of each counter shaft, a feeler for each bobbin, and means under the control of each feeler for automatically moving the belt from one pulley to the other on the counter shaft.

2. In a high speed bobbin winder, a plurality of winding mechanisms arranged in two rows, each mechanism comprising a rotatable but not axially movable bobbin spindle and a counter shaft for positively driving said spindle, the spindles of different rows and the shafts of difierent rows being arranged co-axially, a driving shaft common to said rows, a fast and a loose pulley on each counter shaft, a fast and a loose pulley on the driving shaft for each pair of co axial counter shafts, a driving belt passing over a fast and loose pulley on the driving shaft and over a pulley on two co-axially arranged counter shafts, a feeler for each bobbin, and means under the control of each feeler for automatically producing a positive movement of the belt from one pulley to the other on the counter shafts.

3. In a high speed bobbin winder, a pair of co-axial, rotatable but not axially movable bobbin spindles, a counter shaft for positively driving each spindle, a single belt for driving both shafts, a pair of con tinuously rotating auxiliary shafts, a sleeve on each auxiliary shaft arranged transversely of the spindle and counter-shafts adapted to be connected thereto, a cam disk on each sleeve, a belt-shifter operable by each cam disk, a feeler for each spindle, and means operated by each feeler for moving a sleeve on an auxiliary shaft .into operative connection therewith to operate a belt shifter, and means to release the sleeves from the auxiliary shafts;

4:. In a high speed bobbin winder, a plurality of rotatable but not axially movable bobbin spindles arranged in rows, the spindles of one row being coaxial to the spindles of the other row, a counter shaft for positively driving each spindle, the shafts of one row being arranged coaxially to those of the other row, a fast and a loose pulley on each shaft, a single belt for driving each pair of coaxially arranged shafts, a continuously rotating auxiliary shaft for each row of spindles arranged transversely of the spindles and counter-shafts, a sleeve on each auxiliary shaft for each spindle of a row, a feelerfor each spindle, means operated by the feeler for connecting the sleeves to the auxiliary shafts, a cam on each sleeve, a belt shifter operable in one direction by each cam when the sleeve is connected to its shaft, and means to release the sleeve from its shaft.

5. In a high speed bobbin winder, a plurality of rotatable but not axially movable bobbin spindles arranged in rows, the spindles of one row being coaxial to the spindles of the other row, a counter shaft for positively driving each spindle, the shafts of one row being arranged coaxially to.

those of the other roW, a fast and a loose pulley on each shaft, a single belt for driving each pair of coaxially arranged shafts, a continuously rotating auxiliary shaft for each roW' of spindles arranged transversely of the spindles and counter-shafts, a sleeve on each auxiliary shaft for each spindle of a row, a feeler for each spindle, means operated by the feelers for connecting the sleeves to the auxiliary shafts, a cam on each sleeve, a belt shifter operable in one direction by each cam when the sleeve is connected to its shaft, and means to autorow of spindles arranged transversely of the spindles and counter-shafts, a sleeve on each auxiliary shaft for each spindle of a row, a feeler for each spindle, a cam-disk on the sleeve,-a spring actuated pivoted lever controlled by the feeler and cooperating with the cam disk to axially slide the sleeve to connect it to its shaft, and a second spring actuated lever engaging the opposite side of said cam disk to release the sleeve from its shaft.

7. In a high speed bobbin winder, a plurality of rotatable but not axially movable bobbin spindles arranged in rows, the spindles of one row being coaxial to the spindles of the other row, a counter shaft for positively driving each spindle, the shafts of one row being arranged coaxially to those of the other row, a fast. and a loose pulley on each shaft, a single belt for driving each pair of co-axially arranged shafts, a continuously rotating auxiliary shaft for each row of spindles arranged transversely of the spindles and counter-shafts, a sleeve on each auxiliary shaft for each spindle vof a row, a feeler for each spindle, a cam-disk on the sleeve. a spring actuated pivoted lever controlled by the feeler and cooperating with the cam disk to axially slide the sleeve to connect it to its shaft, a cam on the sleeve for actuating the belt shifter in one direction when the sleeve is connected to its shaft, and means to automatically move the belt shifter in the opposite direction during the rotation of the sleeve.

8. In a high speed bobbin winder, a plu rality of rotatable but not axially movable bobbin spindles arranged in rows, the spindles of one row being coaxial to the spindles of the other row, a counter shaft for positively driving each spindle, the shafts of one row being arranged coaxially to those of the other row, a fast and loose pulley on each shaft, a single belt for driving each pair of coaxially arranged shafts, a continuously rotating auxiliary shaft for each row of spindles, a sleeve on each auxiliary shaft for each spindle of a row, a feeler for each spindle, a cam-disk on the sleeve, a spring actuated pivoted lever controlled by the feeler and cooperating with the cam disk to axially slide the sleeve to connect it to its shaft, a cam on the sleeve for actuating the belt shifter in one direction when the sleeve is connected to its shaft, means to automatically move the belt shifter in the opposite direction during the rotation of the sleeve, and a second spring actuated lever engaging the opposite sideof said cam disk to release the sleeve from its shaft.

9. In a high speed bobbin winder, a shaft, a fast pulley and a loose pulley thereon, a belt for said pulleys, a stationary bearing, a bobbin spindle rotatably but not axially movable therein, a thread guide, said guide and spindle positively actuated from said shaft, a constantly rotating auxiliary shaft, a sleeve on the latter arranged to be connected thereto and disconnected therefrom, a cam on the sleeve, a belt-shifter acted upon by said cam, a feeler lever for the bobbin, a

, pivoted spring-urged arm controlled by said lever and arranged to axially move said sleeve on its shaft to connect it to the auxiliary shaft and cause said cam to actuate the belt shifter, and means to disconnect the sleeve from said shaft.

10. In a high speed bobbin Winder, a

shaft, a fast pulley and a loose pulley thereon, a belt for said pulleys, a belt shifter for the belt, a stationary bearing, a rotatable and non-slidable bobbin spindle in the bearing, a thread guide, said guide and spindle positively actuated from said shaft, a feeler lever for the bobbin, a continuously rotating auxiliary shaft, asleeve on the auxiliary shaft arranged to be connected thereto and disconnected therefrom, a cam on the sleeve to actuate the belt shifter, a second cam on the sleeve, a spring-urged pivoted lever engaging the second cam and controlled by the feeler lever to connect said sleeve to the auxiliary shaft, a second, spring-urged pivoted lever engaging the opposite side of said second cam to disconnect the sleeve when said sleeve has made a complete rotation and has displaced the first lever to place it under the control of the feeler-lever again, said first cam having meanwhile actuated the belt shifter to move the belt from the fast to the loose pulley and back again.

11. In a high-speed bobbin winder, a shaft, a fast pulley and a loose-pulley thereon, a belt for said pulleys, a stationary bearing, a rotatable and non-slidable bobbin spindle mounted therein, athread guide, said guide and spindle positively driven from said shaft, a feeler-lever for the bobbin, a continuously rotating auxiliary shaft, a sleeve on said auxiliary shaft arranged to be connected thereto and disconnected therefrom, means controlled by the feeler lover to connect said sleeve and its shaft, a belt shifter, a friction brake on the shifter cooperating with said fast pulley to simultaneously and suddenly stop the same when the belt is shifted therefrom, a cam on said sleeve to actuate the shifter and brake, and means to automatically disconnect the sleeve from its shaft.

In testimony that I claim the foregoing as my invention, I have-signed my name in presence of two subscribing witnesses.

ANTON ROTTER.

Witnesses:

RANDALL ATKINSON, EUGENE NABEL.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

